*** empty log message ***

[software/libev.git] / ev.c

diff --git a/ev.c b/ev.c
index 14213df8f039858fdcd18a9e79d0ff779d127b70..8a915a4a6e58faba252d3f2a1b608731a3616c7f 100644 (file)
--- a/ev.c
+++ b/ev.c
@@ -4,29 +4,37 @@
  * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>
  * All rights reserved.
  *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
+ * Redistribution and use in source and binary forms, with or without modifica-
+ * tion, are permitted provided that the following conditions are met:
+ * 
+ *   1.  Redistributions of source code must retain the above copyright notice,
+ *       this list of conditions and the following disclaimer.
+ * 
+ *   2.  Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
+ * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
+ * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
+ * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
  *
- *     * Redistributions of source code must retain the above copyright
- *       notice, this list of conditions and the following disclaimer.
- *
- *     * Redistributions in binary form must reproduce the above
- *       copyright notice, this list of conditions and the following
- *       disclaimer in the documentation and/or other materials provided
- *       with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License ("GPL") version 2 or any later version,
+ * in which case the provisions of the GPL are applicable instead of
+ * the above. If you wish to allow the use of your version of this file
+ * only under the terms of the GPL and not to allow others to use your
+ * version of this file under the BSD license, indicate your decision
+ * by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL. If you do not delete the
+ * provisions above, a recipient may use your version of this file under
+ * either the BSD or the GPL.
  */
 
 #ifdef __cplusplus
@@ -282,7 +290,11 @@ typedef ev_watcher *W;
 typedef ev_watcher_list *WL;
 typedef ev_watcher_time *WT;
 
-static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
+#if EV_USE_MONOTONIC
+/* sig_atomic_t is used to avoid per-thread variables or locking but still */
+/* giving it a reasonably high chance of working on typical architetcures */
+static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
+#endif
 
 #ifdef _WIN32
 # include "ev_win32.c"
@@ -590,7 +602,11 @@ fd_reify (EV_P)
       if (events)
         {
           unsigned long argp;
-          anfd->handle = _get_osfhandle (fd);
+          #ifdef EV_FD_TO_WIN32_HANDLE
+            anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
+          #else
+            anfd->handle = _get_osfhandle (fd);
+          #endif
           assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
         }
 #endif
@@ -972,9 +988,13 @@ ev_recommended_backends (void)
 unsigned int
 ev_embeddable_backends (void)
 {
+  int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
+
   /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
-  return EVBACKEND_KQUEUE
-       | EVBACKEND_PORT;
+  /* please fix it and tell me how to detect the fix */
+  flags &= ~EVBACKEND_EPOLL;
+
+  return flags;
 }
 
 unsigned int
@@ -2266,7 +2286,7 @@ embed_io_cb (EV_P_ ev_io *io, int revents)
   if (ev_cb (w))
     ev_feed_event (EV_A_ (W)w, EV_EMBED);
   else
-    ev_embed_sweep (loop, w);
+    ev_loop (w->other, EVLOOP_NONBLOCK);
 }
 
 static void
@@ -2274,8 +2294,24 @@ embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
 {
   ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
 
-  fd_reify (w->other);
+  {
+    struct ev_loop *loop = w->other;
+
+    while (fdchangecnt)
+      {
+        fd_reify (EV_A);
+        ev_loop (EV_A_ EVLOOP_NONBLOCK);
+      }
+  }
+}
+
+#if 0
+static void
+embed_idle_cb (EV_P_ ev_idle *idle, int revents)
+{
+  ev_idle_stop (EV_A_ idle);
 }
+#endif
 
 void
 ev_embed_start (EV_P_ ev_embed *w)
@@ -2296,6 +2332,8 @@ ev_embed_start (EV_P_ ev_embed *w)
   ev_set_priority (&w->prepare, EV_MINPRI);
   ev_prepare_start (EV_A_ &w->prepare);
 
+  /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
+
   ev_start (EV_A_ (W)w, 1);
 }